I do that because I used to work in grocery stores and can noticed even small, incremental price changes on many items. Most consumers don’t do that and hardly notice 3 cents more on this and 2 ounces short on that. We are already accustomed to toilet paper and laundry detergent mega-size and “concentrated” bullshit.
Because of the electoral college, my vote doesn’t mean much of anything in a presidential election because I live in a very blue state, not a swing state. I still vote, though.